Self-aligning bearing connection



Aug. 4, 1925.

L. LORENZEN I SELF ALIGNING BEARING CONNECTION Filed Oct. 29, 1924 Lorenz lam weig Patented Aug. 4, 1925.

LORENZ LORENZEN, OF SALT LAKE CITY, UTAH.-

sELr-Amsnme ammo commcrron.

Application filed October 29, 1924.' Serial 1T0. 746,647.

L To all wkomjt may concern:

Be it known that I, LORENZ LoRENzEN, a

' citizen of the United States, and resident of .Salt Lake City, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Self- Aligning Bearing Connections, of which the following is a specification.

Mv invention relates to improvements inself-aligning bearing connections between a connecting rod and a crank shaft and piston,

my purpose being to provide a-simple, cheap and eflicient construction whereby harmful stresses and strains in and upon such parts are eliminated and all forces transmitted between them are concentrated substantially in a direct line, so that friction with consequent wear, looseness of parts and the necessity for their frequent adjustment is reduced to a minimum. v

With-the foregoing and otherpurpo ses in view, my invention consists in the novel fea-' tures of construction, combination-"and, arrangement of parts as will be-hereinafter more fully described,-illustrated in the accompanying drawings and defined the appended claims. 3 In the drawings, wherein like characters of reference denotecorresponding parts in the different views igure 1 is a sectional view showing my im roved bearing connections between a connecting rod and a crank shaft and piston; a Figure 2, a transyerse section on the line 2-2 of Figural; J

Fi re 3, a sectional .view throu h the-ball j mem er-constituting an element 0 the bearing connection between 'thefpi' m j the cohnectingmod; and .v

. Figure 4 a perspective of'the shown in Figures 1 and 2. In the present instance I have away improved bearing connections associated with a connecting rod 101between a-convenu tional piston 11 and crank shaft 12. Y The crank pin 13 ofcrank shaft 121s rovided with a spherical enlargement 14, w ile the adjacent end of the connecting rod .10

and its bearin half 10' are correspondingly t at provided. wit spherical recesses, so when the bearing half is bolted to the con-.

as is obvious.

r0 10 and its associated bearing Piston 11 is rovided with internal transversely aligne porting a wrist pin 17, boss 151 in this instance being formed with a circular opening 18 and boss 16 with a square or other polygonally shaped openin 19 toreceive a corr'es ondingly shaped end 20 of the wrist pin w ereby t clatter is prevented from turning within the openings in said bosses as is manifest.

On the wrist pin is mounted a spherically shaped member 21, its bore being such that it engages the squared or other polygonally shaped end of the wrist pin to-prevent its turning thereon, and bolted in embracing relation to this spherically-shaped member in conventional manner is the adjacent corres ondingly recessed endv of the connecting half 22, whereby a ball and socket connectlon also is produced between the connecting rod and the piston. a

In 'bnventional manner wrist pin 17 is locked against endwise' movement-through the bosses 15, 16 by a fastener 23 which extends through one of the bosses and the with consequent loss of compression 'leaka of gasoline, pumping of-oil and he rapid accumulation of carbon as well'as bindingof [the piston against the cylinder walls with "consequent excessive friction, wear and strain on the parts, the ball and'socket joints permit self alignment of the bearings and all harmful results of such a condition will be eliminated. Furthermore, due to the balland' s'ocket joints at each end of the connecting rod a1 forces transmitted from bosses 15 and 16.for supthe crank shaft through the rod to the piston I from the piston through the rod the crank shaft are concentrated substantially in a direct line through the centers of the wrist and crank pins, so that all harmful stresses and strains on the parts also are eliminated.

I claim 1. In mechanism of the class described, a piston having a pair of aligned openings formed in and extending through diametrically opposite portions of the side wall thereof, respectively, one of said openings beingof polygonal shape and the other being circular in cross section, the minimum diameter of said circular opening being as great as the maximum diameter of said polygonal opening, and a Wrist pin including cylindrical and. polygonal portions engageable in said cylindrical and polygonal openings, respectively, said wrist pin being insertable through the side of the piston into said openings.

2. In mechanism of the kind described, a piston, a Wrist pin extending transversely of said piston, a portion of said Wrist pin being of polygonal shape in cross section, a spherical member detachably mounted on said wrist pin and including a 'bore a portion at least of which in cross section corresponds to and coactswith the polygonal portion of the wrist pin to prevent turning of the member on the wrist pin, and means to secure an end of a connecting rod in embracing relation to said member thereby to provide a ball and socket joint connection between the piston and the connecting rod.

In testimony whereof I hereunto afiix my signature.

LORENZ LORENZEN. 

